Fig. 5
From: Construction of a risk prediction model for Alzheimer’s disease in the elderly population
DCA of risk prediction nomogram for AD in the elderly. a Training set; b Validation set. The black solid line represents the assumption that none of the participants have AD, and gray solid line represents the assumption that all of the participants have AD. The blue thick solid line represents the composited model, combined with sex, age, economic status, health status, lifestyle and genetic risk as prediction methods, and developing AD as the result. The red thick solid line represents a simple model with only a single risk factor included. The y-axis is net benefit, and the x-axis is threshold probability